[root@linux1 ~]# oracleasm listdisks
CV01
CV02
CV03
DATA1

如果我们知道当前系统下有多少ASM磁盘组，但不知道每个磁盘组对应的具体磁盘路径，利用用下列命令来查找。

[root@linux1 ~]# ls -l /dev/oracleasm/disks/
total 0
brw-rw---- 1 grid oinstall 8, 17 Jun 18 22:00 CV01
brw-rw---- 1 grid oinstall 8, 33 Jun 18 22:00 CV02
brw-rw---- 1 grid oinstall 8, 49 Jun 18 22:00 CV03
brw-rw---- 1 grid oinstall 8, 65 Jun 18 22:00 DATA1

比如，我们要查找DATA1磁盘组的系统磁盘路径。

[root@linux1 ~]# fdisk -l

Disk /dev/sda: 21.4 GB, 21474836480 bytes
255 heads, 63 sectors/track, 2610 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

  Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1          13      104391   83  Linux
/dev/sda2              14         274     2096482+  82  Linux swap / Solaris
/dev/sda3             275        2610    18763920   8e  Linux LVM

Disk /dev/sdb: 1073 MB, 1073741824 bytes
255 heads, 63 sectors/track, 130 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

  Device Boot      Start         End      Blocks   Id  System
/dev/sdb1               1         130     1044193+  83  Linux

Disk /dev/sdc: 1073 MB, 1073741824 bytes
255 heads, 63 sectors/track, 130 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

  Device Boot      Start         End      Blocks   Id  System
/dev/sdc1               1         130     1044193+  83  Linux

Disk /dev/sdd: 1073 MB, 1073741824 bytes
255 heads, 63 sectors/track, 130 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

  Device Boot      Start         End      Blocks   Id  System
/dev/sdd1               1         130     1044193+  83  Linux

Disk /dev/sde: 10.7 GB, 10737418240 bytes
255 heads, 63 sectors/track, 1305 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

  Device Boot      Start         End      Blocks   Id  System
/dev/sde1               1        1305    10482381   83  Linux

Disk /dev/sdf: 10.7 GB, 10737418240 bytes
255 heads, 63 sectors/track, 1305 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

  Device Boot      Start         End      Blocks   Id  System
/dev/sdf1               1        1305    10482381   83  Linux

Disk /dev/sdg: 10.7 GB, 10737418240 bytes
255 heads, 63 sectors/track, 1305 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

  Device Boot      Start         End      Blocks   Id  System
/dev/sdg1               1        1305    10482381   83  Linux
[root@linux1 ~]# oracleasm querydisk /dev/sde1
Device "/dev/sde1" is marked an ASM disk with the label "DATA1"
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